A 6-Month-Old Neglected Obturator Inferior Variety of Anterior Hip Dislocation in A Young Male Managed with an Intermediary Salvage Measure Without the Need for Osteotomy or Excision Arthroplasty with A Resultant Ambulatory Natural Hip – A Case Report

Introduction: Among all the traumatic hip dislocations, anterior hip dislocation is a rarity in which the obturator inferior variety is one of the rarest to be documented [1]. Here we present to you the case of our patient, a 35-year-old male with a six month neglected obturator variety of anterior hip dislocation treated by salvage procedure of open reduction without the need for intertrochanteric osteotomy and resultant preserved natural hip for ambulation as an intermediary procedure. Case Report: Mr. SH a 35-year-old male had a fall from 15 feet in his village and was treated by a local quack, Meanwhile the patient continued to experience pain and difficulty walking and after an ordeal of nearly 6 months during the lockdown period in coronavirus disease pandemic, showed up in our emergency room and was diagnosed with an obturator type anterior hip dislocation for which we carried out open reduction aided with Murphys skid through an anterolateral approach and stabilization using two Steinman pins and further immobilization by Thomas splint for a period of 15 days, which was done after confirmation of intact head vascularity under general anesthesia after which gradual mobilization was initiated. 3 months post operative, now patient is ambulatory with stick support with no deformity, no pain and with early radiological features of avascular necrosis (AVN) for which Total Hip Replacement (THR) is planned at a later date. Conclusion: Utilisation of salvage procedures and moreover those with minimal operative complications will result in better, natural long-term intermediary measure outcome with a resultant delay in joint replacement procedure which is in the better interest of the patient. Keywords: Anterior hip dislocation, open reduction, obturator inferior type, neglected dislocation, Anterolateral approach.

The influence of sagittal pelvic malrotation on transverse acetabular ligament guided cup orientation: a retrospective cohort study

Background Total hip arthroplasty (THA) candidates frequently present pelvic malrotation. The aim of this study is to analyze how pelvic malrotation influence transverse acetabular ligament (TAL) guided cup orientation and investigate whether pelvic malrotation produce different clinical outcomes after THA. Methods We retrospectively reviewed a consecutive series of THA patients (144 hips) who use TAL as a guidance for cup positioning from March 2017 to January 2020. The patients were divided into normal pelvis (NP) group and backward pelvis (BP) group by sagittal pelvic malrotation assessed by APPA, the angle between the vertical and the APP on standing lateral pelvic radiographs preoperatively. Cup anteversion and inclination and that out of the safe zones were measured and compared in two groups. The demographic data, clinical results, and complications of patients were also compared. Results Backward pelvic malrotation were found in 60.6 % of this cohort of THA candidates. The mean angle of both inclination and anteversion in BP group were significantly larger than that in NP group. The rate of cup for anteversion and inclination above the safe zone in BP group was significantly larger than that in NP group. There were 4 patients in BP group recording anterior hip dislocation after surgery. Other complications were not observed at last follow-up. Conclusions Backward pelvis malrotation may increase TAL guided cup inclination and anteversion, which were inclined to became outlier above the safe zone. This likely increase the rates of dislocation after THA. For the patients with pelvis malrotation, cup positioning should be performed individually instead of guided by TAL.